Walworth County is in Great Lakes South Dakota. Of the 66 counties in the Coyote State, Walworth County ranks 45th in terms of size (744 square miles). Recent listings of residential land and property for sale in Walworth County, South Dakota, totals about 1,000 acres and a combined market value of about $900,000. The most common type of land for sale by combined acreage in Walworth County is farms. The average price of residential acreage for sale in Walworth County was $294,333. Browse all residential land and rural property for sale in South Dakota to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.